expansion contraction bellows
1bellows — Devices used for measuring pressure. They are circular corrugated metal capsules, which are either evacuated or filled with an inert gas. As the pressure changes, the bellows either contract or expand, and this expansion/contraction is converted… …
2Bellows — Bel lows, n. sing. & pl. [OE. bely, below, belly, bellows, AS. b[ae]lg, b[ae]lig, bag, bellows, belly. Bellows is prop. a pl. and the orig. sense is bag. See {Belly}.] An instrument, utensil, or machine, which, by alternate expansion and… …
3Bellows camera — Bellows Bel lows, n. sing. & pl. [OE. bely, below, belly, bellows, AS. b[ae]lg, b[ae]lig, bag, bellows, belly. Bellows is prop. a pl. and the orig. sense is bag. See {Belly}.] An instrument, utensil, or machine, which, by alternate expansion and… …
4Expansion joint — For the railway specific expansion joints, see Breather switch. Expansion joint on a bridge An expansion joint or movement joint is an assembly designed to safely absorb the heat induced expansion and contraction of various construction materials …
5expansion joint — any device containing one or more bellows used to absorb dimensional changes, such as those caused by thermal expansion or contraction of a pipeline, duct, or vessel …
6bellows — noun plural but singular or plural in construction Etymology: Middle English bely, below, belwes more at belly Date: before 12th century 1. an instrument or machine that by alternate expansion and contraction draws in air through a valve or… …
7A pair of bellows — Bellows Bel lows, n. sing. & pl. [OE. bely, below, belly, bellows, AS. b[ae]lg, b[ae]lig, bag, bellows, belly. Bellows is prop. a pl. and the orig. sense is bag. See {Belly}.] An instrument, utensil, or machine, which, by alternate expansion and… …
8Hydrostatic bellows — Bellows Bel lows, n. sing. & pl. [OE. bely, below, belly, bellows, AS. b[ae]lg, b[ae]lig, bag, bellows, belly. Bellows is prop. a pl. and the orig. sense is bag. See {Belly}.] An instrument, utensil, or machine, which, by alternate expansion and… …
9Metal bellows — are elastic vessels that can be compressed when pressure is applied to the outside of the vessel, or extended under vacuum. When the pressure or vacuum is released, the bellows will return to its original shape (provided the material has not been …
10respiration — respirational, adj. /res peuh ray sheuhn/, n. 1. the act of respiring; inhalation and exhalation of air; breathing. 2. Biol. a. the sum total of the physical and chemical processes in an organism by which oxygen is conveyed to tissues and cells,… …
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